Defeature bpf_loader; bpf_{c,rust} features now confined to programs/bpf

ci/test-bench.sh

@@ -42,12 +42,12 @@ BENCH_ARTIFACT=current_bench_results.log
 _ cargo +nightly bench ${V:+--verbose} \
   -- -Z unstable-options --format=json | tee "$BENCH_FILE"
 
-# Run bpf_loader bench with bpf_c feature enabled
-echo --- program/bpf_loader bench --features=bpf_c
+# Run bpf benches
+echo --- program/bpf
 (
   set -x
-  cd programs/bpf_loader
-  cargo +nightly bench ${V:+--verbose} --features="bpf_c" \
+  cd programs/bpf
+  cargo +nightly bench ${V:+--verbose} --features=bpf_c \
     -- -Z unstable-options --format=json --nocapture | tee -a ../../../"$BENCH_FILE"
 )